Charging a 2027 BMW i7 xDrive50 Sedan (21 inch All-Season Tires) at home in Idaho

A 2027 BMW i7 xDrive50 Sedan (21 inch All-Season Tires) draws 37.4 kWh per 100 miles per the EPA; at Idaho's 12.8¢/kWh residential rate that's $4.79 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 70.1% cheaper per mile than gasoline in Idaho — charging at home costs a fraction of what gas would here.

Annual cost, at 15 thousands miles a year

Idaho owners putting 15,000 annual miles on a 2027 BMW i7 xDrive50 Sedan (21 inch All-Season Tires) spend about $719 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,684 saved annually, at this mileage.

What one full charge costs

At Idaho's rate, fully covering this 2027 BMW i7 xDrive50 Sedan (21 inch All-Season Tires)'s 354-mile EPA range costs about $16.97 (132.5 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 BMW i7 xDrive50 Sedan (21 inch All-Season Tires) in Idaho ranks 3,552 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW i7 xDrive50 Sedan (21 inch All-Season Tires) ranks 205 of 400 EV models for raw efficiency, and Idaho ranks 3 of 51 for cheapest residential electricity.

Before you install a home charger in Idaho

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

Ask a licensed Idaho electrician to quote the install before this math becomes a real decision.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2027 BMW i7 xDrive50 Sedan (21 inch All-Season Tires)'s cost in Idaho. Idaho is one of the cheapest states for home electricity — the guide to why the cost varies so much by state covers what drives that.